A magnetic sensor device includes a three-dimensional (3D) magnetic sensor and a magnet that produces a magnetic field. The 3D magnetic sensor is arranged within the magnetic field and is configured to measure three different magnetic field components of the magnetic field and generate sensor signals in response to the measured three different magnetic field components. The magnet is arranged in a default spatial position in an absence of any applied spatial force, where the magnet is configured to rotate about a rotation axis based on an applied rotational force. The magnetic field varies inhomogeneously with regards to at least one of the three magnetic field components upon rotation of the magnet about the rotation axis.